Is it.....

my Classmates and me

or

my classmates and I

7 answers

It depends upon whether you and your classmates are the subject of the sentence (in which case use ".. and I"), or the object of a verb or preposition. That is more complicated grammar than I was taught in third grade.
My classmates and I are going on a field trip to the natural history museum
(The phrase is the subject in there; therefore, you use "I")

The vice principal told my classmates and me to go back to our classroom.
(The phrase is the direct object in this sentence; therefore you use "me")

... just as DrWLS said.
mY CLASSMATES AND i
my class mates and i is te correct answr
Its my classmates and I.
my classmates and I
Depend on how you use it