RELTA for has been developed to meet the ICAO language proficiency requirements for testing:

• RELTA addresses the specificlanguage needs of pilots. RELTA for Air Traffic Controllers assess language proficiency of ATCs
• RELTA assesses candidates at all six ICAO language proficiency levels
• RELTA reflects the requirements of the ICAO holistic descriptors in the test design, format,administration and scoring processes
• The ICAO rating scales applied in the rating processes
• RELTA assesses proficiency in both phraseology and plain English in radiotelephony communications
• RELTA is a direct test of listening and speaking ability. RELTA does not assess reading,writing skills or grammar knowledge
• Computers are utilised in the delivery of RELTA to enhance authenticity and task interactivity and allow for standardised and uniform administration
• RELTA requires candidates to communicate with examiners directly
• RELTA is rated by at least two accredited raters so that results are fair and reliable
• RELTA has been trialled with non-native and native-speaking personnel
• RELTA has been rigorously checked for reliability and validity through statistical analysis of test data
• RELTA rating and reporting processes are externally controlled by RMIT English Worldwide to maintain test security and quality
• RELTA Examiners and RELTA Raters complete accreditation and recurrent training programs to maintain quality standards
• Multiple versions of RELTA are developed and maintained by RMIT