Since the driver is not a Connecticut resident, this would not apply and it seems to me that the question was about the effect on his insurance, not points on his driving record.
According to the Massachusetts Driver's Manual, chapter 2, pages 47-48
here,
"Out-of-State Violations
Massachusetts shares driving-record and criminal-violation information with other states.
Some traffic offenses from other states will be on your driving record.
They will be treated by the RMV like they happened in Massachusetts.
Out-of-state violations can cause your license to be suspended.
They can also cause your
automobile insurance cost to go up.
Surchargeable Events
Motor vehicle violations and at-fault accidents
are called surchargeable events. Each
surchargeable event counts toward a possible license suspension.
Most out-of-state traffic
convictions count as if they took place in Massachusetts
Surchargeable events also affect your motor vehicle insurance. The Merit Rating Board runs the Safe Driver Insurance Plan (SDIP). Under SDIP, your insurance premium is
determined by your driving record. If you are a safe driver, your rate may go down.
Your
rate will increase if you are convicted of moving violations