This quantitative study reports data from nearly 200 teaching and learning development units (TLDUs), regarding their current staffing levels compared to the number of FTE faculty and FTE student enrollment. The study found that these staffing ratios at primary TLDUs vary by both institutional control and by Carnegie classification: in general, private institutions have a higher TLDU staff to faculty or student ratio than public institutions, and doctoral institutions have the lowest ratio of any of the four Carnegie institution types. This benchmarking data enables institutions to compare their primary TLDU staffing levels to peer institutions as one indication of commitment to the improvement of teaching. (Contains 1 table.)