Table:
0
A
B
C
D
E
F
G
H
I
1
school id
school name
location
mascot
enrollment
ihsaa class
ihsaa football class
county
2
1
Bremen
Bremen
Lions
495
AA
AA
50 Marshall
3
2
Culver Community
Culver
Cavaliers
287
A
A
50 Marshall
4
3
Glenn
Walkerton
Falcons
605
AAA
AAA
71 St. Joseph
5
4
Jimtown
Elkhart
Jimmies
601
AAA
AAA
20 Elkhart
6
5
Knox Community
Knox
Redskins
620
AAA
AAA
75 Starke
7
6
LaVille
Lakeville
Lancers
379
AA
A
71 St. Joseph
8
7
New Prairie 1
New Carlisle
Cougars
852
AAA
AAAA
46 LaPorte 71 St. Joseph
9
8
Triton
Bourbon
Trojans
316
A
A
50 Marshall

Questions and formulas:
Question: How many schools are there?
Formula: SUM(A1)
Formula2: SUM(A2:A9)
Level: easy
Question: Count the number of schools.
Formula: SUM(A1)
Formula2: SUM(A2:A9)
Level: easy
Question: Show all school names in alphabetical order.
Formula: SORTBY(B1,B1,1)
Formula2: SORTBY(B2:B9,B2:B9,1)
Level: easy
Question: List the name, location, mascot for all schools.
Formula: CHOOSE({1,2,3},B1,C1,D1)
Formula2: CHOOSE({1,2,3},B2:B9,C2:C9,D2:D9)
Level: easy
Question: List the name of the school with the smallest enrollment.
Formula: LET(a,SORTBY(B1,E1,1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Formula2: LET(a,SORTBY(B2:B9,E2:E9,1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Level: hard
Question: Show each county along with the number of schools and total enrollment in each county.
Formula: SUMMARIZE(H1,SUMX(A1),SUMX(E1))
Formula2: SUMMARIZE(H2:H9,SUMX(A2:A9),SUMX(E2:E9))
Level: medium
Question: The number of schools.
Formula: SUM(A1)
Formula2: SUM(A2:A9)
Level: easy
Question: How many schools?
Formula: SUM(A1)
Formula2: SUM(A2:A9)
Level: easy
Question: Schools names in alphabetical order 
Formula: SORT(UNIQUE(B1), 1, 1)
Formula2: SORT(UNIQUE(B2:B9), 1, 1)
Level: easy
Question: Ids, names and mascots of all schools at different locations
Formula: UNIQUE(HSTACK(B1,C1,D1,A1))
Formula2: UNIQUE(HSTACK(B2:B9,C2:C9,D2:D9,A2:A9))
Level: easy
Question: id and name of the school with lowest enrollment
Formula: LET(a,HSTACK(A1,B1),b,A1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A1,SUMX(E1)), 2, 1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(A2:A9,B2:B9),b,A2:A9,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A2:A9,SUMX(E2:E9)), 2, 1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: Each country's total enrollment and total number of schools
Formula: SUMMARIZE(H1,SUMX(A1),SUMX(E1))
Formula2: SUMMARIZE(H2:H9,SUMX(A2:A9),SUMX(E2:E9))
Level: medium
Question: The school names from a to z.
Formula: SORT(UNIQUE(B1), 1, 1)
Formula2: SORT(UNIQUE(B2:B9), 1, 1)
Level: easy
Question: The ids and names of schools with their mascots at different locations.
Formula: UNIQUE(HSTACK(B1,C1,D1,A1))
Formula2: UNIQUE(HSTACK(B2:B9,C2:C9,D2:D9,A2:A9))
Level: easy
Question: the id and name of school with the least enrollment
Formula: TAKE(SORT(SUMMARIZE(HSTACK(A1,B1),SUMX(E1)), 3, 1), 1)
Formula2: TAKE(SORT(SUMMARIZE(HSTACK(A2:A9,B2:B9),SUMX(E2:E9)), 3, 1), 1)
Level: hard
Question: The number of schools and total enrollment in each country.
Formula: SUMMARIZE(H1,SUMX(A1),SUMX(E1))
Formula2: SUMMARIZE(H2:H9,SUMX(A2:A9),SUMX(E2:E9))
Level: medium
Question: How many schools?
Formula: SUM(A1)
Formula2: SUM(A2:A9)
Level: easy