Table:
0
A
B
C
D
E
F
G
H
1
School
Location
Mascot
County
Year Joined
Previous Conference
Year Left
Conference Joined
2
Argos
Argos, IN
Dragons
50 Marshall
1998
independent
2008
independent
3
Elkhart Christian
Elkhart, IN
Eagles
20 Elkhart
2004
new IHSAA school
2008
independent
4
Marquette Catholic
Michigan City
Blazers
46 LaPorte
1998
independent
2007
Greater South Shore
5
Oregon-Davis
Hamlet, IN
Bobcats
75 Starke
1998
independent
2008
independent
6
River Forest
Lake Station
Ingots
45 Lake
1998
Northwest Hoosier Conference
2007
Greater South Shore
7
South Central (Union Mills)
Union Mills
Satellites
46 La Porte
1998
independent
2003
Porter County
8
Westville
Westville, IN
Blackhawks
46 La Porte
1998
Porter County
2008
independent

Questions and formulas:
Question: Of all the schools that left before 2003, what is the average year joined?
Formula: AVERAGE(FILTER(E1, G1<2003))
Formula2: AVERAGE(FILTER(E2:E8, G2:G8<2003))
Level: easy
Question: What year did the Ingots, who left after 2007, join?
Formula: ROWS(UNIQUE(FILTER(E1, (C1="ingots")*(G1>2007))))
Formula2: ROWS(UNIQUE(FILTER(E2:E8, (C2:C8="ingots")*(G2:G8>2007))))
Level: medium