DD & DS1 are in yr8 & yr7 respectively & I had to buy minimum 30 litre bags to get all their equipment in.
Today DD (very petite barely weighs 5 stone) has to take:
PE kit - trainers, socks, leggings, t-shirt & hoody.
Cooking ingredients - macaroni cheese - to serve 4 people
Large pencil case inc calculator, glue, maths kit, pens x 4, pencils x2, highlighters x 2, rules, sharpener, rubber etc.
Revision booklet, reading book, diary & school guide (detention given if not brought daily).
Lunch & bottle of water - takes so long to queue to buy lunch that there's barely any time to eat so she has to take it (or doesn't eat).
Oh & her phone, sanitary items, deodorant & hand gel.
She can't take a coat as can't carry it (not allowed to wear it inside the building & has to be put in bag!).
She used to take her PE kit in a separate bag but found it harder to handle.
Her bag threatened to topple her over this morning. This is not unusual sadly!