44AD/44ADA

Section 44ADA – The presumptive taxation scheme for Professionals

can he go for 44AD

No.Section 44AD – Presumptive taxation scheme for BUSINESS.

In case teacher doing his profession as business ( eg. Having one or more coaching center, two or more teacher teaches many subjects etc.) then teacher can opt sec 44AD.
And if teacher is in singly doing his profession (like Legal, Medical, Engineering, Architectural Profession, Profession of Accountancy, Technical Consultancy, Interior Decoration) then teacher can opt sec 44ADA.
I feel in your case it will be Sec 44AD.

I think sec. 44ADA.

Because 44ADA defines as any "assessee", being a resident in India engaged in profession as in Sec.44AA.

Sec 44AD can't applicable for teacher....

In case He/She had any professional courses like "M. Phil, P. hd, etc" then He can opt in Presumptive Scheme u/s 44ADA...