Heya,
I would look for a used APS-C, older model, here on POTN or elsewhere (fleabay, etc), and KEH.com (KEH usually has deals, and coupons, so just watch for that, percentage off deals are great).
Look for (at $80~200):
Canon XSi (pay no more than $120)
Canon T1i (pay no more than $150)
Canon T2i (there's a T2i, 50 F1.8 STM & 18-55 STM in the forum here on POTN right now for $350 shipped)
Canon 20D ($70 on KEH right now with battery & charger)
Canon 30D ($120 on KEH right now with battery & charger)
Canon 40D (pay no more than $150)
For lenses, Yongnuo makes a fast, sharp with AF lens: 50mm F1.8 for Canon for $50 new.
Great for yearbook portraits.
Maybe toss in a used 18-55 II ($50~60 these days on KEH.com) for wide stuff and group portraits, functions, etc.
Throw in a TTL flash, like a Bower SFD728C ($40 new on Adorama). Or Neewer NW680/TT680 for $60 on Amazon right now. Bounce TTL is awesome for portraits in the dank dark places in schools.
A Canon 20D, Yongnuo 50 F1.8, and Neewer NW680 would be an awesome "journalist" setup for a student. Under $200.
Very best,