The phrase "a three stage evaluation" is correct and usable in written English.
You can use it when referring to an assessment process that consists of three distinct phases or steps.
Example: "The project will undergo a three stage evaluation to ensure all aspects are thoroughly assessed before final approval."
Alternatives: "a three-phase assessment" or "a tri-stage review".
With a two stage evaluation process, the MAVT analysis led to a high consensus among the stakeholders on the alternative that favors water recycling from the wastewater treatment plant combined with small dams for rainwater harvesting.
This study was designed with the aim to investigate ODD prevalence in a non-referred school sample, with a well defined and sufficient sample size, by three stage evaluation and by considering impairment criteria and employing best estimate procedure for diagnosis.
A two stage formative evaluation of the e-HIT was undertaken.
8 9 10 11 12 We carried out a two stage independent evaluation of physician health programmes in the United States.
Analysis has been done in two stages: evaluation of common services on the basis of their significance as perceived by inhabitants, and assessment of significant services to check their availability and functionality.
The bottom two stages -- evaluation and selection -- are best managed by consultants who bear the responsibility to close deals.
Roder et al [ 19, 20] carried out an evaluation of a four stage skills training program focused on improving either recreational skills, vocational skills or residential skills for patients at eight institutions in Germany, Switzerland and Austria.
The development of an Evaluation Framework for Injury Surveillance Systems (EFISS) involved a four stage process.
To facilitate evaluation and assessment, an eight stage model identifying the key elements of CCE, drawn from the review, was developed.
In pursuit of innovation, companies go through three stages: reconnaissance, evaluation, and investment.
