Table:
text: Northern State Conference (IHSAA)
Membership
Membership
School_IHSAA_ID_ Location_ Mascot Enrollment IHSAA_Class _County Year_Joined
Bremen Bremen Lions 505 AA 50 Marshall 1989
Culver Community Culver Cavaliers 306 A 50 Marshall 1977
Glenn Walkerton Falcons 613 AAA 71 St. Joseph 1966
Jimtown Elkhart Jimmies 642 AAA 20 Elkhart 1966
Knox Community Knox Redskins 632 AAA 75 Starke 1982
LaVille Lakeville Lancers 413 A 71 St. Joseph 1966
New Prairie New Carlisle Cougars 859 AAAA 46 LaPorte 71 St. Joseph 1968
Triton Bourbon Trojans 333 A 50 Marshall 1980

Question: What is the total number of enrollments for Culver schools among members of the Northern State Conference (IHSAA)?

Question: In what year did the school join the Northern State Conference (IHSAA) membership with 413 enrollments?