They dropped the quotẹ, not missed
I think, workers in Noc C, D is the target of TR2PR-Essential workers stream, not students.
Each stream is aimed at a target, so the conditions are different, although it is easy to think that it is the same at first glance.
Check the tool for TR to PR :
https://www.cic.gc.ca/english/immigrate/trpr/eligibility.asp
Question 1: Are you currently in Canada? ----------------- Say
YES
Question 2: Do you have a valid work or study permit? -- Say
YES
Question 3: Are you currently employed?------------------ Say
YES
Question 4: Do you plan to live outside of Quebec?------ Say
YES
Question 5: Do you have at least 1 year of work experience (at least 1,560 hours) in the past 3 years in an
eligible health care occupation? --- Say
YES
Question 6: Do you have a total of at least 1 year of work experience (at least 1,560 hours) in the past 3 years working in an
eligible essential occupation or in a combination of an eligible essential occupation and an
eligible health care occupation? --- Say
YES
Question 7: Did you graduate from an
eligible program at a
designated learning institution (opens in a new tab) on or after January 1, 2017? --- Say YES
Question 8: Have you taken an approved language test to assess your English or French skills? If the test results will be more than 2 years old when you apply, select “No.” --- Say YES
Question 9: What
level (opens in a new tab) does it show you scored for reading, writing, speaking and listening (for the Canadian Language Benchmarks or Niveaux de compétence linguistique canadiens)? Choose your lowest score. --- Say
As per the program requirement.
Question 10: Was your language test in English or French? --- --- Say
As per the program requirement.
Press the
CONTINUE Button.
You will find yourself eligible under all (3) three: Health care, Essential, and as well as International Graduate stream.
Then why this online tool makes a STUDY-PERMIT-HOLDER eligible for all (3) three programs ?