Looking on the internet deeply has found these results:

on a high level is the most popular phrase on the web.

at a hight level 184 results on the web	on a high level 1151,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
long dependency on carers�... tonomous functions and therefore to a life First, at a hight level: Why differentiate like this? These concepts seem like similar ideas that can't decide if they are the same, or different�... A cervical spinal cord injury (SCI) at a hight level leads to a loss of motor, sensory , and au ... unit of fuel is increased, exhaust temperatures are lower, sludge rejects are minimized and performance remains at a hight level for extended periods of time. RHYTHM AND TIMING is what it takes to demonstrate forms and weapon manipulation at a hight level. The difference between making a strike to your opponent�...	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

at a hight level

184 results on the web

on a high level

1151,000,000 results on the web

More popular!

long dependency on carers�...
tonomous functions and therefore to a life
First, at a hight level: Why differentiate like this? These concepts seem like similar ideas that can't decide if they are the same, or different�...
A cervical spinal cord injury (SCI) at a hight level leads to a loss of motor, sensory , and au
... unit of fuel is increased, exhaust temperatures are lower, sludge rejects are minimized and performance remains at a hight level for extended periods of time.
RHYTHM AND TIMING is what it takes to demonstrate forms and weapon manipulation at a hight level. The difference between making a strike to your opponent�...

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.