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Cozy Classroom Size 10/12 Cardigan Crochet Pattern

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It’s official! We are HALF WAY through the sizes of the NEW crochet cardigan series: the Cozy Classroom Cardigan series. This free crochet pattern is for the child size 10/12 cardigan. Be sure to check the measurements listed below, each size listed has its respective measurements included in the pattern.

Size 10/12 Cardigan crochet pattern

The Cozy Classroom Cardigan is available in a variety of sizes:

Get the 3 – 6 month size here.
Get the 12 month size here.
Get the 2/3T size here.
Get the 4/5T size here.
Get the 6/8 youth size here.
Get the 8/10 youth size here.
Get the 10/12 youth size here.
Get the 14/16 youth size here.

See a bunch of photos and grab the ADULT size here.

Cozy Coed Cardigan

Measurements for 10/12 youth:

Armhole to armhole (across back) = 14.5″
Neck to hem = 20″
Upper arm = 13″ circumference
Cuff = 9″ circumference
Sleeve length = 18″
Body circumference = 30″

Materials:

Worsted weight (size 4/Aran) yarn (such as this)
-approx. 900 yards total for 10/12 cardigan
Crochet hook in size J/6mm
Elbow patches (optional – but darn cute!)

Gauge: 11 hdc and 10 rows in 4” square

Special stitches used: 

Fhdc – Foundation Half Double Crochet
Fphdc – Front Post Half Double Crochet
Bphdc – Back Post Half Double Crochet
Fpdc – Front Post Double Crochet
Bpdc – Back Post Double Crochet

Size 10 12 youth cardigan crochet pattern

Cozy Classroom Size 10/12 Cardigan 

Row 1: Fhdc-60. (or ch-61, hdc in 2nd chain from hook and each to end) (60)

Row 2: Ch-1, hdc in each st to end. (60)

Rows 3 – 34: Ch-1, hdc in each st to end. (60)

Row 35: Ch-1, hdc in 40 sts, ch-21. (61)

Row 36: Hdc in 2nd ch from hook and each across. (60)

Rows 37 – 51: Ch-1, hdc in each st to end. (60)

Fasten off.

Armholes for infant cardigan

Other side (with top of cardigan to your right as pictured)

Start with a long tail for sewing later.

Row 1: Ch-20, hdc in 21st st and in each st to end. (60)

Rows 2 – 17: Ch-1, hdc in each st to end. (60)

Fold front sides in and sew shoulders together using the mattress stitch.

Edging/collar:

Attach yarn at bottom right as pictured.

Row 1: Ch-1, hdc in 50 sts, 2hdc in next, hdc in next 2 sts, 2 hdc in next 2 sts, hdc in next, 2hdc in next, hdc in next, 2hdc in next, hdc in next (shoulder seam st) hdc2tog in same and next st (the shoulder seam sts), hdc in same. 12 hdc across neck, hdc in next (shoulder seam st), hdc2tog in same and next st (the shoulder seam sts), hdc in same. 2hdc in next, hdc in next, 2hdc in next, hdc in next, 2hdc in next 2 sts, hdc in next 2 sts, 2 hdc in next, hdc in 50 sts. Ch-1, turn. (146)

First row of the cozy classroom cardigan by Heart Hook Home

Row 2: Ch-1, turn, hdc in 46 sts, * 2hdc in next, hdc in 2 sts * repeat between * * 5 times. 2hdc in next, hdc in 16 sts, * 2hdc in next, hdc in 2 sts * repeat between * * 5 times. 2hdc in next, hdc in 46 sts. (160)

Second row of the cozy classroom cardigan series

Row 3: Ch-1, turn, hdc in 48 sts, * 2hdc in next, hdc in 3 sts * repeat between * * 3 times, 2hdc in next, hdc in next 30 sts, * 2hdc in next, hdc in 3 sts * repeat between * * 3 times, 2hdc in next, hdc in 48 sts. (170)

Third row of the Cozy Classroom Cardigan size 1012

Row 4: Hdc in first, * fphdc around next st, bphdc around next * repeat between * * 15 times (33 sts so far), * fpdc around next st, bpdc around next * repeat between * * 51 times. * fphdc around next st, bphdc around next * repeat between * * 15 times , hdc in last. Ch-1, turn. (170)

Rows 5: Hdc in first, * fphdc around next st, bphdc around next * repeat between * * 14 times (31 sts so far), * fpdc around next st, bpdc around next * repeat between * * 53 times. * fphdc around next st, bphdc around next * repeat between * * 14 times , hdc in last. Ch-1, turn. (170)

Rows 6: Hdc in first, * fphdc around next st, bphdc around next * repeat between * * 13 times (29 sts so far), * fpdc around next st, bpdc around next * repeat between * * 55 times. * fphdc around next st, bphdc around next * repeat between * * 13 times , hdc in last. Ch-1, turn. (170) (fig. 6)

Youth cardigan crochet pattern for boys

Sleeves:

*here’s a video of me making this exact sleeve live!

Attach yarn at bottom of armhole with sl st.

Row 1: Ch-1, Hdc evenly around. (40)

Do not join, work in spiral instead using stitch markers to note first st of each round.

Rows 2 – 3: Hdc in each st around (40)

Row 4: Hdc in each st around, hdc2tog in last 2 sts (39)

Row 5: Hdc in each st around (39)

Rows 6 & 7: repeat rows 4 & 5 (38)

Rows 8 – 17: Hdc in each around (38)

Row 18: Hdc in each st around, hdc2tog in last 2 sts. (37)

Row 19: hdc in each st around (37)

Repeat rows 18 & 19 six times (ending with 31 sts)

Rows 32 – 38: Hdc in each st around (31)

Rows 39 – 42: * fphdc in first, bphdc in next * repeat between * * around. Slip st to top of next st. Invisible join and weave in ends.

Youth cardigan for boys, size 1012

Bottom (optional, not as pictured):

Sc in each row end around bottom of cardigan. Fasten off and weave in all ends. And now your 10/12 cardigan is almost complete! Add the elbow patches if desired, 3/4″ buttons, or a zipper. Done!

crochet 10/12 cardigan for boys

Share photos of your Cozy Classroom 10/12 Cardigan with me by tagging @HeartHookHome on Instagram and Twitter, and by sharing in the Heart Hook Home Crochet Community group on Facebook!

This pattern series goes all the way up to men’s sizes!

MORE FREE CROCHET PATTERNS:

Infant Hoodie Crochet Pattern (size 3 – 6 months)
Four-Hour Fall Sweater Free Crochet Pattern
Newborn Sleep Sack Free Crochet Pattern
Toddler Hoodie Free Crochet Pattern (size 2/3T)
Bunny Beanie with Ears Free Crochet Pattern (Boy and Girl)
Beanie Hat for Preemie Babies Free Crochet Pattern
Houseplant Clippings Plant Hanger Crochet Pattern

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21 Comments

  1. If I wanted to make the 10/12 bit larger, where would I add stitches? Back or sides at the end? I was thinking about adding the same amount of stitches to the back. Would that be okay? My grandson is not big enough for the size bigger. Thank you. I love this pattern
    Reply
    2. Hi Valerie! Since this sweater is worked vertically, then adding stitches will increase the length. To add width you will want to add rows...so, if you were to add rows to the fronts I would also add the total number of extra rows to the back as well. For example, if you add 2 rows to each front, then add 4 to the back. Does that help?
      Reply
  2. I love this pattern .. I bought the adult pattern and made one for my son .. everyone in the family wants one for their kid ... I couldn't find a pattern for size 12 to 14 .. is there one please? Thank you for sharing .. I love the video tutorial as well. Keep it up.
    Reply
    1. Hi Amira! I am so glad you have been enjoying the pattern! The kids 14/16 can be found here: https://hearthookhome.com/cozy-classroom-cardigan-size-1416-youth-large/
      Reply
  4. Good Morning, Hope everyone is staying safe. I love this pattern and thank you for it. I am at the neck of the 10/12 and I do not have 12 stitches across the back. Should I still put 12 or just the amount of stitches I have which is only 6. Thank you
    Reply
    1. Hi Diana! Yes, put 12 sts across the back...that will help open up the collar there. Hope this helps!
      Reply
  6. I have finished the back and 1st side of the front. It looks like if I sew both fronts to the back at the shoulders, they will nearly meet each other in the center. Am I supposed to stitch them all the way? I don’t see a recommended number of rows to stitch together, and I wonder if there will be room for the neck.
    Reply
    1. Hi Laura! Yes, you stitch the front panels all the way. You should have 2 open stitches in the middle, which may not seem like enough of a neck opening, but adding the collar/edging will really open that neck up. Hope this helps!
      Reply
  7. I'm doing the youth 10/12. And idk if I'm missing something or not understanding. But I'm confused on the sleeve opening. Which would be row 35 and 36. I watched a video that you have on YouTube and the way it's on there is different from the patter I see here. I know the numbers are different. But the you explain it on the video is not the same as what I see written here. I don't know if maybe I'm not understanding it right. Can you please help. Thank you.
    Reply
    1. Just found this and am making it for my son. He is a very thin size 10. My gauge has been correct and consistent throughout, but this is nearly too small for him. I had to add extra rows for the sleeves to make them long enough and added a fpdc/bpdc band at the bottom in order to make it long enough. I'm not sure what the issue is, but this fit him more like an 8. Luckily, I have enough experience to figure out how to make it work. Not sure how this can be a 10-12. I'm just hoping he can actually wear it when he's a 12.
      Reply
  8. I am on to sewing the sleeves together. However i cant seem to find how it should look. I dont know where the sleeves are. Any suggestions?
    Reply
    1. Hi Anna! I have a facebook video that shows how to do the sleeves on this cardigan. The video can be found here: https://www.facebook.com/HeartHookHome/videos/1824329907857128/
      Reply
  9. Please help, I have 34 rows across the back and 17 rows on each side of the front. When folded over there is no space for the neck. What oh what am I doing wrong.... Please help my grandson asked me to make him a sweater with a zipper for christmas I can't let him down
    Reply
    1. Hi Mary Ann! You are not doing anything wrong...that is the way this works up. Once you do the collar, it will pull that neck area open more. Hope that helps!
      Reply
      1. Ty so much I'm still a bit of a beginner.this is the only sweater pattern that I liked so I really wanted to make this.
        Reply
  10. I'm loving this pattern and it's killing me that the size I need will be the very last one to come out. I was hoping to be able to make it for a Christmas gift but I'm a pretty slow crocher. Lol I did make the 3 mo. Suze for my new grandbaby. Maybe you saw it on the Facebook page. It was multi pink, green, white, yellow varigated. The vertical stripes turned out awesome. Can't wait for her to grow into it.(and you thought it was a male pattern. hahaha) Keep plugging and I'll keep waiting.
    Reply