[Alex80]

Hello everyone!
I came across these sentences:
1." She's going to tell Jack he passed the test."
2."I won't get a good grade on this test.
It was too difficult."
My question is: Is it correct to say:
1."She will tell Jack he passed the exam."?
2." I' m not going to get a good grade on this test. It was too difficult."?
And what's the difference?