[osipov]

BS. i took 5th, 6th grade in Soviet Union. we had no calculus and purely conceptual, primarily arithmetic oriented physics.

[borism]

dunno about 5th and 6th grades, but yes, physics and calculus are definitely introduced in middle school (junior high for our american friends).

[osipov]

physics in 5th grade,an equivalent of American precalculus in 9th grade and calculus in 10th grade