IJS can mean Intermediate Junior School.
FR in texting means "for real" as an exclamation.
ths stands 4 this in texting
imf
Call Me
Yyp
nothing much you?
Cracks me up
it stands for mate
Yes please
BTR
In texting, T6 typically stands for "Thanks." This is a shorthand way of expressing gratitude or appreciation in a concise manner. The "T" represents the first letter of the word "Thanks," and the "6" may be used as a numerical substitution for the letters "h" and "s" in the word.