This is the 4537th most frequent Russian word.
высшем
"Высшем" means "highest" or "supreme" in English, often used in contexts like "higher" (education, ranks, etc.).
Here, 'высшем' is used as an adjective meaning 'higher', describing the type of educational institution.
Он учится в высшем учебном заведении.
He studies in a higher education institution.
In this usage, 'высшем' is an adjective meaning 'highest' and it describes the level of action or decision-making.
На высшем уровне было принято важное решение.
An important decision was made at the highest level.
Here, 'высшем' acts as an adjective meaning 'highest', referring to the quality or standard of achievements.