"a considerable level of" is a grammatically correct phrase and can be used in written English.
It is often used to describe a significant or noteworthy amount or degree of something. Example: The company has achieved a considerable level of success in its first year of operation.
A GSI score of ≥0.5 indicates a considerable level of gingivitis.
A clear structural change, from columnar grains to very fine equiaxed grains with a considerable level of porosity, was evidenced.
A lower limit for the bend sharpness is determined for the attainment of a considerable level of sound attenuation.
The trick of balancing a serious novel on a single potential act of intercourse can't help causing its author, one would think, a considerable level of performance anxiety.
Increasing levels of demand for electrical power for vehicles have prompted a considerable level of research into higher voltage systems.
The analyzed data illustrated a considerable level of variability in the genetic pool of the local germplasm.
The main topics of his letters to Kircher are steganography and the universal language, about which he demonstrates a considerable level of knowledge.
Addressing whether EPA's determination was "permissible" alludes to the fact that EPA has a considerable level of discretion in statutory interpretation.
A considerable level of automation of the apparatus is achieved by use of individual timers for each of the five solenoid valves.
The aquaculture of bivalve molluscs has attained a considerable level of production but it is not enough to cover the demand of worldwide consumers.
Defining and structuring wicked design problems has a major influence on subsequent problem solving, and demands a considerable level of skill.
