Hopefully this is the right section.

Awhile ago I found this awesome backpack pattern online. But I lost my bookmarks and can't find it now :(. Does anyone happen to know of a good pattern for a backpack? A good one that I can use for class and can take a fair amount of weight? Thanks :)

Yes I would like to know too.

I have one from Lazy girl designs.

SewBatik has one

the one I have is from Moda bake shop. It was a free one.

I made one just measuring from one I already owned.

You might check on:

http://diybaglover.blogspot.com/

i had the lazy girl one shown with red fabric. didn't like it. the straps were very difficult to get the pack on with.

P & B Textiles has a free cute pattern called Chloe's Backpack.

This one is free.

Just click Download.