The word Clased is misspelled against Classed, which is past tense of "Class"
-->
Classed has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings cla & ed which should not be misspelled with single 'S'
Wrong Spelling: cla-s-ed
Correct Spelling: cla-ss-ed
Explore spell check of Classed to spell without errors.