Table:
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School
Mascot
Location
Founded
Entered ISL
Grades
Number of Students
Varsity Teams
2
Belmont Hill School
No Mascot (Sextant is school symbol)
Belmont, MA
1923
1948
7-12
420 Boys
16
3
Brooks School
Bishops
North Andover, MA
1926
1948
9-12
368
22
4
Buckingham Browne & Nichols
Knights
Cambridge, MA
1883
1948
pre-K-12
997
16
5
Governor's Academy
Red Dogs
Byfield, MA
1763
1948
9-12
376
20
6
Groton School
Zebras
Groton, MA
1884
1972
8-12
352
19
7
Lawrence Academy at Groton
Spartans
Groton, MA
1793
1973
9-12
375
22
8
Middlesex School
Zebras
Concord, MA
1901
1968
9-12
350
24
9
Milton Academy
Mustangs
Milton, MA
1798
1948
K-12
680
25
10
Noble and Greenough School
Bulldogs
Dedham, MA
1866
1948
7-12
525
25
11
Rivers School
Red Wings
Weston, MA
1915
1973
6-12
450
16
12
Roxbury Latin School
Foxes
West Roxbury, MA
1645
1974
7-12
290 Boys
10
13
St. George's School
Dragons
Middletown, RI
1896
1981
9-12
345
24
14
St. Mark's School
Lions
Southborough, MA
1865
1948
9-12
325
22
15
St. Paul's School
Pelicans (teams are cheered for as "Big Red")
Concord, NH
1856
1973
9-12
533
17
16
St. Sebastian's School
Arrows
Needham, MA
1941
1973
7-12
350 Boys
14

Questions and formulas:
Question: how many varsity teams are in west roxbury, ma?
Formula: SUMIFS(H1,C1,"West Roxbury, MA")
Formula2: SUMIFS(H2:H16,C2:C16,"West Roxbury, MA")
Level: easy
Question: what is the mascot of st. paul's school? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,A1="St. Paul's School"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H16,A2:A16="St. Paul's School"),2))
Level: medium
Question: where are dragons used as mascots?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,B1="Dragons"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H16,B2:B16="Dragons"),3))
Level: medium
Question: when was lawrence academy at groton established? 
Formula: SUMIFS(D1,A1,"Lawrence Academy at Groton")
Formula2: SUMIFS(D2:D16,A2:A16,"Lawrence Academy at Groton")
Level: easy
Question: name the school located at Milton, ma.
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,C1="Milton, MA"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H16,C2:C16="Milton, MA"),1))
Level: medium
Question: how many places have 17 varsity teams?
Formula: ROWS(UNIQUE(FILTER(C1, H1=17)))
Formula2: ROWS(UNIQUE(FILTER(C2:C16, H2:H16=17)))
Level: medium