If I had a part time job in last summer, do I still have my employer filling a W2 form for me?

You will RECEIVE a W-2 form from your employer. You use the W-2 form to file your 1040 (your tax return), which you SUBMIT to the IRS.

If you earned less than $5700 for the year, you are under no legal obligation to file. However, if your employer withheld anything from your paycheck for taxes during the year, filing a return is the only way that you will get that money back again.

If you don't file, just enter "0" on your FAFSA whenever it asks about your taxes.

yes you do.

lets hope they send you a W-2 if not, then the money you made might have to be declared as self employment income on a Sch C and possibly SE
the 31st is the deadline for the W-2's be issued so hopefully you will get one then or the next day

if he withheld any income tax then he will have to give you a W2 if not then he should give you a 1099. i'm not sure but if you earned less than $600. you don't have to report it or file unless you had other income. check with the IRS to be sure

YOU do not have a choice.
Your employer is required by law to give you a W2 or a 1099.
It must be mailed or handed to you by January 31.

THIS IS WHY OUR SCHOOLS NEED TO TEACH FINANCIAL LITERACY AND LIFE SKILLS.

And you'd better learn about handling money before you get ripped off like all of the other illiterate people here.
http://www.usa.gov/Citizen/Topics/Money/Kids.shtml