The phrase "displayed a high level" is correct and usable in written English.
You can use it when referring to the level of a certain skill, task, or ability that someone or something has achieved. For example: "The presentation displayed a high level of professionalism."
For instance, one child displayed a high level of post-traumatic stress symptoms after going through a car wash.
He also displayed a high level of class by helping the young and inexperienced Posada even though the Yankees planned to make him their No. 1 catcher.
"Most of the participants in today's protests displayed a high level of commitment to the principles of freedom of expression, integrity and responsibility as members of the community.
Managers who believed the company's processes were fair displayed a high level of trust and commitment, which, in turn, engendered active cooperation.
One of the primer pairs and the corresponding probe displayed a high level of amplification efficiency on which a real-time RT-PCR method was established.
These markers displayed a high level of polymorphism overall (6.67 alleles/locus), though this was slightly lower within populations (3.10 4.88 alleles/locus).
These projections of leaf-growth rates displayed a high level of correspondence with values observed in our data, as well as with other sets of reference data.
Formed only in 2011 under the guidance of Kannen, the ensemble has already displayed a high level of performance, earning the 2011 12 Peabody Conservatory Honors Ensemble award.
The AcCR amino acid sequence displayed a high level of similarity to the identical proteins from other Acetobacter and related bacteria.
Priyono, et al. (2011) found that the high level of landslide vulnerability was characterised as middle to upper slope area with steep to very steep slopes (>60%), which displayed a high level of weathering and erosion.
At the hub of each CoP, there is a group of learners who displayed a high level of career dispositions (inferred from the portal analytics in the previous step).
