Spent is the most negative connotation.
Explanation:
Fatigued is to feel exauhsted.
Weary is lack of sleep, tiredness.
Tired is just a minimal drousy feeling.
And spent is as if your energy was all used up, consumed.
Problem and solution. the problem is too many students at the high school, their solutions are sending them to the nearby middle school and bringing in portables.
