help me, i had translated my song 50% i need more help from you guys, please help me translate some of the lines.. thanks

I need to Study- benkyou suru hitsuyou ga aru
V1:
The lessons are cool - kono gakka wa kakkoi desu
There’s a pencil over there-sore wa Empitsu desu
There’s a paper and a pen- Asoko ni pen to peeperu ga arimasu
And I want to feel the good grades in my heart.- Watashi no kokoro ni, ii deki(or -seiseki) ga kanjite hoshii

Ref:
But the lessons are difficult- Demo, (u can use -datte in this situation as well) kakyou muzukashii desu
And it’s hard for me to get the fruits from it- Soshite, sore kara kudamono o dasu koto wa muzukashii desu
So I’m here, sitting in my bench-
Because all I need to do is.-


Chorus:
I need to study
Study for the day- Kore wa dou no koto ni benkyou shiyou
The roots are bitter but the fruit is sweet
Those cool classmates over there
Are now taking us in their study habits oh yeah!
Oh yeah! yeah! yeah!

V2:
The lessons are awesome-jugyou wa sugoi (desu)"
I see a lot of papers in the classroom desks-takusan kami no ___ ni tsukue ga arimasu(?)
Well its our reviewer
And we are busy reading those roots