Participation is based on academic excellence and requires applying at the individual faculty.

Participation required the school's administration and the teachers to sign an agreement to prioritize improving student academic success.

Participation required the administration, the school board and the local teachers' union to sign an agreement to prioritize improving student academic success.

Participation in the tours requires Smithsonian Institution membership ($24 a year).

Participation required the written consent of the school board, the school administration and the teachers' union.

Participation requires verification of home ownership, age and income; (212) 962-7653.

Participation for students requires about 4-8 study hours and 8-16 homework hours weekly.

Participation required the administration, the school board and the local teachers' union to sign in support of the grant.

Participation does not require a telescope, as most amateur astronomers let visitors look through their telescopes.

Participation in work, shopping, schooling and so on requires travel in the modern metropolis.