kooliaastat
Kooliaastat is the partitive singular form of the Estonian noun kooliaasta, which translates to "school year." It occurs when the noun is used in a partitive sense, typically to indicate an indefinite quantity or to follow numerals expressing a non-specific amount. In practice, Estonian often uses the partitive after numerals such as two, three, or four, yielding kooliaastat for phrases like “two school years” or “three school years.” The form is commonly found in standard Estonian grammar, dictionaries, and academic discussions of morphology.
The form kooliaastat is produced by taking the base kooliaasta and applying the conventional Estonian partitive
Usage-wise, kooliaastat appears in linguistic descriptions of Estonian morphology and in examples that demonstrate the partitive