This study investigates teachers’ perceptions about the assistance provided to students with special educational needs, developmental disorders and high skills or giftedness at a state educational institution in Londrina (Brazil) which offers exclusively Youth and Adult Education modality. For this, we applied an instrument to collect data with 24 participants whose questions were about school inclusion in Youth and Adult Education. The results showed that most teachers did not receive specific training to support pupils with special educational needs. These professionals reported that they are dissatisfied with the developed work, highlighting the lack of training and capacitating programs as the main cause. Data also showed that, in seeking help and support for professional practice, teachers usually rely on colleagues with specific training and the school teaching staff. Several points highlighted as barriers for effective school inclusion are related to questions present in any heterogeneous class and not specifically with students with special educational needs. Thus, it is believed that the inclusion in the school environment can be a reality and the teacher is a key element in the consolidation of this process.