"They are probably of a higher quality than the general population."

Your mother wanted a high quality of education and health care for you.

Even then, the sound would not be of high quality.

Everything about the production was of a very high quality.

He published about 270 books, of high quality for the times.

"The time is going to be spent on higher quality, more important work."

The produce did not seem to be of high quality.

Published works were known for both high quality and low price.

Data must be of high quality and based on common standards.

However, the product is often also of a higher quality.