assiduous
hardworking
industrious
patient
sedulous
tireless
untiring
academic
active
advertent
agog
alert
all ears
all eyes
ardent
attentive
aware
bookish
careful
concentrated
conscientious
conscious
constant
continuing
devoted to studies
dogged
donnish
dryasdust
earnest
elaborate
enduring
energetic
faithful
fervent
finical
finicking
finicky
hard
hard-working
heedful
immutable
inalterable
indefatigable
indomitable
insistent
intense
intent
intentive
invincible
laborious
diligence
competent
painstaking
skilful
studious
thorough
thoughtful
vigilant
zealous