In addition to their natural classifications, expenses are also classified by their functional classifications. Functional classifications are assigned to departments based on the nature of their activity, such as instruction, public service, institutional support, etc.

Operating expenses by functional classification for the years ended September 30, 2019 and 2018 are summarized as follows:

2019 Operating Expenses (by functional classification)
Salaries, wages and benefits
Supplies and services
Depreciation
Scholarships and fellowships
Total
Instruction
297,467,363
44,025,924
17,316,287
-
358,809,574
Research
38,725,055
30,893,292
7,285,356
-
76,903,703
Public service
37,948,763
12,864,748
1,805,580
-
52,619,091
Academic support
67,030,949
17,182,958
14,185,268
-
98,399,175
Student services
40,900,552
16,492,629
5,590,605
-
62,983,786
Institutional support
79,689,598
19,234,060
7,621,508
-
106,545,166
Operations and maintenance
74,106,901
27,075,521
-
-
101,182,422
Scholarships and fellowships
-
-
-
15,704,771
15,704,771
Auxiliary enterprises
92,648,328
107,554,466
25,061,327
10,554,449
235,818,570
Total operating expenses
728,517,509
275,323,598
78,865,931
26,259,220
1,108,966,258

2018 Operating Expenses (by functional classification)
Salaries, wages and benefits
Supplies and services
Depreciation
Scholarships and fellowships
Total
Instruction
287,672,478
46,300,146
16,835,770
-
350,808,394
Research
33,910,512
26,424,365
5,806,828
-
66,141,705
Public service
37,170,423
11,551,010
1,741,996
-
50,463,429
Academic support
65,078,438
15,602,723
13,559,390
-
94,240,551
Student services
39,848,939
16,828,916
5,274,468
-
61,952,323
Institutional support
82,329,678
23,115,679
6,959,020
-
112,404,377
Operations and maintenance
70,697,129
23,612,378
-
-
94,309,507
Scholarships and fellowships
-
-
-
13,430,050
13,430,050
Auxiliary enterprises
83,048,385
99,504,665
25,307,752
10,255,591
218,116,393
Total operating expenses
699,755,982
262,939,882
75,485,224
23,685,641
1,061,866,729