Qualifications improve your chances; they do not gate the job. Level 6 is the most recognised.
Level 6 most recognisedOpen entry
Your route in
Employers typically expect around L6
1
Qualifications employers recognise (Level 6)
Any of these strengthens your application.
2
Where this can take you
Requires Qualified Teacher Status (degree or Level 6 teacher apprenticeship/PGCE); teachers of sensory impairment additionally need a Level 7 Mandatory Qualification.