After adjusting for inflation, average total tuition at private not-for-profit research and doctoral institutions increased from about $16,300 in 1992–93 to about $19,700 in 1999–2000. Tuition levels still increased between the two periods after federal grants were subtracted (net tuition 1). However, after all grants were subtracted (net tuition 2), no change was detected in average net tuition levels (about $12,000). Tuition amounts for private not-for-profit comprehensive and baccalaureate institutions followed a similar pattern: average total tuition increased from about $12,300 to $14,000; net tuition increased from $11,500 to $13,200 after federal grants were subtracted; and no difference was detected in net tuition after all grants were subtracted (about $8,000).