Add pinable classrooms

[robozmey]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (eb56fc3) 72.11% compared to head (d7725e0) 72.11%.
Report is 4 commits behind head on main.

❗ Current head d7725e0 differs from pull request most recent head 0fd182f. Consider uploading reports for the commit 0fd182f to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #385   +/-   ##
=======================================
  Coverage   72.11%   72.11%           
=======================================
  Files          64       64           
  Lines        1474     1474           
  Branches      238      238           
=======================================
  Hits         1063     1063           
  Misses        244      244           
  Partials      167      167           

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