Lahan Technical School offers a three year Diploma in Civil Engineering program of CTEVT. This program provides knowledge, skill and experience required to succeed in the civil engineering profession. It provides solid understanding of mechanics, materials, structures, construction techniques, practical skills in surveying construction management, structural and environment impact analysis and design, analyzing and implementing engineering solutions efficiently.

Lahan Technical College offers a three year Diploma in Mechanical Engineering program of CTEVT. This program aims to prepare a competent and employable middle level technical workforce from knowledge of product design, maintenance engineering, power generation engineering, industrial engineering, and also become self-reliant and reduce dependence of foreign employed technicians in this field.

Lahan Technical School offers a three year Diploma in Pharmacy after CTEVT. This program aims to prepare technical human resources in the pharmaceutical industry. It develops competency for preparing, dispensing and use of medication, quality control and rational use of drugs within health care service. This program has been accredited by Nepal Pharmacy Council.

Lahan technical school offers a Pre-Diploma in Civil Engineering program of one year and three months to prepare civil sub overseer for construction of building, water supply, irrigation, road and bridges along with small scale rural water supply scheme. The study and skills relevant with civil engineering are provided in computer aided drafting, construction material, construction technology, engineering drawing, engineering surveying, entrepreneurship development, estimating, costing and supervision, road and trail bridge, water supply, sanitary and irrigation engineering.

Lahan Technical College offers one year three months Pre-Diploma in Survey Engineering program of CTEVT. This program provides the technical workforce of survey Engineering by applying knowledge and fundamental skills of surveying, drawing and computer aided design, applying construction basic skills, GIS skills, topographical survey mechanism. The practical skills are done by students themselves to co relate with what they had learnt in classrooms. 

Council of Technical education and Vocational Training provides Pre-Diploma in Livestock production and an animal health program of one year and six months is offered at Lahan Technical School. This program aims to produce junior technical assistants in livestock production, animal health. It provides knowledge and skills of livestock production and management, dairy science, poultry production, animal nutrition, animal health. It also gives skills of livestock extension, communication and entrepreneurship skills to provide own livestock production and sell the products like milk, eggs, meat in the market.

Lahan Technical School offers a Pre-Diploma in Agriculture plant science one year three months program of CTEVT. This program prepares for Junior level technical assistants with knowledge of agriculture and farm management. It provides skills and knowledge of agriculture extension and community development, entrepreneurship, crop and crop seed production, plant propagation, vegetable and vegetable seed production, fruit cultivation, agriculture ecology, Api culture, Sericulture and lac culture, farm machinery usage for irrigation and fish culture in the full length of study and skill training.

Lahan Technical School also offers Pre-Diploma in Mechanical Engineering of CTEVT. It is a two years five months program that provides technical knowledge to produce mechanical sub overseers who can perform basic mechanical works, computer application, mechanical drawing and drafting, operate lathe milling and shaping machines, maintain and repair mechanical devices.

Lahan Technical School offers Diploma in Agriculture Plant Science of CTEVT. This is a three years program designed to prepare agro veterinary technicians with knowledge of agriculture production to marketing and financing services, livestock and crop supply, crop management, agriculture merchandising and farm management. There is also a work experience program for 8 hours per day.

Lahan Technical School offers a three year Diploma in Agriculture Animal Science program of CTEVT. This program aims to prepare mid-level human resources with skills of agriculture, veterinary science and animal husbandry. The area of knowledge and skills from Diploma in Agriculture Animal Science are aquaculture and fisheries, animal nutrition and fodder production, livestock production, dairy farming, dairy and animal product technology, poultry, animal breeding, veterinary lab technology, and vet clinical practices.