Atending or Attending: How To spell?
The word Atending is misspelled against Attending, which is present continuous of "Attend"
Attending has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings a & ending which should not be misspelled with single 'T'
Wrong Spelling:  a-t-ending  Correct Spelling:  a-tt-ending 
Find more wrongly spelled words of Attending to spell it well.