Okay .. Legally all your former bosses can confirm is :

* Did this person work from date X to date X
* Did she make X amount per hour.
* Would you rehire this person.

I really hope you get this job. But if for some reason you don't ... Keep in mind your age , you can and should just not list every job yoou have had especially if you think it would "look bad" , Your a college student. Employers are use to people your age not having long stretches of employment because your studies should come first .

Again the questions above are the only legal questions that can be asked.

Hope this helps