The purpose of this study was to identify the computer use in the management and operation concerning teaching and learning among teachers. This study also identified technology leadership for measuring the NETS-A international standard system (ISTE, 2014) and the impact of technology achievement in these schools. Methodology: Systematic random sampling was conducted to select a total of 374 teachers and 74 principals and 74 schools from the National Secondary School in Kedah in this cross-sectional survey. The Principal Technology Leadership Assessment (PTL) is based on the National Education Technology Standards-Administrator, NETS-A (2009). The technology leadership questionnaire (PTL) contains 65 Likert-scale items used to obtain information about the involvement of principals in their work. Findings: The items of this survey were validated by pilot tests with findings of 0.915 for TTU instruments and 0.831 for PTL. The results of the actual study show that the overall leadership skills of the technology heads based on the five standards in the NETS-A are high based on the findings of mean analysis and standard deviation. The SMART-PLS analysis showed moderate achievement in each field of TTU teacher study. Simple Linear regression used to identify the principal technological leadership relationship with teacher computer use and the results were not significant. Significance: Principals as technology leaders need to facilitate and enhance ICT integration as ICT contributions have proven to be key factors for increasing productivity, promoting economic growth, and reducing poverty in a country.