This study's primary aim was to assess the role of Sakhnin College's internal laboratory, known as "Spiral", in the professional development of educational supervisors within learning communities. Additionally, it sought to determine the extent of Spiral's contribution to the professional growth of these supervisors and explore whether there were any significant differences based on variables such as gender, age, and teaching subject specialisation. Utilising a descriptive approach and a questionnaire, data collected from 32 expert, state licensed educational supervisors revealed that the laboratory played a significant role in enhancing the professional development of educational supervisors. Notably, the sub-field "development of pedagogical tools and products" garnered the highest score while "cooperative teaching in pairs" scored the lowest. Our study found no statistically significant differences among respondents based on gender, age, or specialisation. Recommendations and suggestions based on our findings are offered.