Data Cleaning with R chr vs dbl

The schoolyear variable is type dbl but the answer uses quotes to search for a character.

Both codes below are considered correct when submitted.

Screen Link:
Mission

My Code:

demographics <- demographics %>%
  filter(schoolyear == "20112012" & grade9 != "NA") %>%
  select(DBN, Name, frl_percent, total_enrollment, ell_percent, 
         sped_percent, asian_per, black_per, 
         hispanic_per, white_per, male_per, female_per)
demographics <- demographics %>%
  filter(schoolyear == 20112012 & grade9 != "NA") %>%
  select(DBN, Name, frl_percent, total_enrollment, ell_percent, 
         sped_percent, asian_per, black_per, 
         hispanic_per, white_per, male_per, female_per)

What I expected to happen:

I expected to get an empty df when filtering with “20112012”

What actually happened:

Same df when filtering was 20112012