DO NOT READ 2 or 6. Tragedy. (I didn't, either.)
First story with the student who liked flowers was sweet. (1, 3&4) The second with the student and the cafeteria cook was okay but I didn't really like the cafeteria guy. (Ch 5) I'd give the first 5/5 and the second 3/5 so average out to 4.
Natsu, Kimi ga Saku