let's see-
in elementary-local dairy, sutter's fort, san francisco zoo, other places in sacramento, exploritorium, golden gate park, lawrence hall of science-don't remember much else.
in jr. high-to san francisco for some awsome productions at the american conservatory theatre, exploritorium, planetarium, marriotts great america, the mall 3 counties away that had an ice skating rink several times,
disneyland for a few days (by grayhound bus

).
in high school-to san francisco for (get this) 'star wars' (we talked the teacher into it and he somehow got it past administration), san francisco for the broadway touring cast of 'the wiz' (stephanie mills was fantastic), a week long choir tour through california (and again to disneyland). could have done the trip to france-did'nt want to (and glad i did'nt, big scandle over drunk and disorderly chaperones

), could have done hawaii-no desire to, opted out of doing another choir tour, and avoided grad nite at disneyland like the plague.
my kids have gone on allot more field trips than i did-but none have involved any type of cost more than $5 on our part, their schools have not been into doing trips that could exclude some based on cost. despite that they've had at least one 5 day field trip each year.