It is a parallel learning system in the Philippines that provides a practical option to the existing formal instruction. When one does not have or cannot access formal education in schools. ALS is an alternate or substitute. ALS includes both the non-formal and informal sources of knowledge and skills. 

      ALS is flexible. It is an anytime, anywhere learning. It uses interactive modules and learning sessions are usually conducted at community learning centers at an agreed schedule between the learners and the facilitator. 

        ALS is intended for Out-of-School Youth and Adults who are 16 years old or older and beyond basic school age that need basic literacy skills particularly in reading. Writing and simple computation. 

  These people are usually located in far-flung communities with no or limited, access for formal schools. 

     The ALS utilizes learning modules. Each modules is complete in itself. It contains the objectives and description of the module, learning activities, pre and post test. Modules for the basic and lower elementary learners come with a facilitator’s guide. Meanwhile, modules for advanced elementary and secondary were designed for self-learning. 

       In the conduct of ALS sessions, use of supplementary learning materials is being encouraged particularly those that are developed by the Facilitator to suit the local need and context and are locally available.