I agree with taking some time off — I'm struggling to get so much work done for school, and I desperately need a vacation... luckily it is already kind of close. (writing-temptations.net)
I have something I have to do for my school district and I'd like to make these. (karenskitchenstories.com)
In the body of the cover letter, mention what you will do for the school if they select you for the job. (bestcoverletters.com)