Como dizer "Está rendendo" em inglês

And also:

-My studies are not going as well as they could.
-My studies are not going as well as I wish.
-My studies are not going as well as I had hoped.
-My studies are not going as well as I'd hoped.
-My studies are not going as well as I had hoped.
-I am having difficulties with my studies.
-I am struggling with my studies.
-I don´t feel like I am improving much these days, I am having problems with my studies.



And other ways...

-My performance (in the studies) is lower than I expected...
-My previous experiences of learning have been very different.
-My strategies of studying in High School times isn´t working at Uni.
-I´m somehow falling behind my friends/classmates; I don´t know why, though.
-My focus on the studies was disrupted by something. (by a broken relationship, by a loss of someone close to him/them/you.)
-I am with learning difficulties (in general, or with some subject - for example, English.)
-I am struggling with the complexities of the matter/subject (with the complexities of Mathematics).


And much more...

diversos verbos poderiam ser utilizados: work, render, yield, deliver, provide, give....

" My studies are not yielding (the desired results) "