Table:
text: Southern Athletic Conference of Indiana
Membership
Membership
School Location_ Mascot County Enrollment IHSAA_Class Year_Joined Previous_Conference
Borden * Borden Braves 228 A 10 Clark 1974 Lost River
Crothersville * Crothersville Tigers 180 A 36 Jackson 1974 Mid-Hoosier
Henryville Henryville Hornets 347 AA 10 Clark 1977 Lost River
Lanesville Lanesville Eagles 237 A 31 Harrison 1979 Blue River
New Washington New Washington Mustangs 273 A 10 Clark 1974 Dixie-Monon
South Central (Elizabeth) Elizabeth Rebels 277 A 31 Harrison 1979 Blue River

Question: Which school has an A enrollment in Indiana's Southern Athletic Conference and had lost River as their previous conference?

Question: What is the average year that the 277 districts of Indiana's Southern Athletic Conference joined?

Question: What is the county's IHSAA class in Indiana's Southern Athletic Conference that is less than 228?