This qualitative study describes the effectiveness of blended learning in the classroom. The main question for the research study is: How effective is blended learning from the teacher perceptions in schools locally in the U.S. and abroad? This research examines how teacher perceptions improve student performance through blended learning. The work then explores the effectiveness of blended learning through instructional methods and professional development. The purpose is to explore and understand teachers' perceptions, feelings, and views on the use of blended learning. The qualitative research methodology helped offer knowledge of teachers' ideas and viewpoints. The results described learning experiences, shared knowledge and skills, described perceptions, and addressed the open-ended questions. The participant responses were collected using Survey Monkey's Facebook link and LinkedIn social media platforms to guide and complete the process. The researcher identified five themes from participant responses. Themes included "positive teacher perceptions, increased success, accomplishments, and challenges, effective instructional practices that impacted student learning, continued monitoring /providing immediate feedback, and ongoing professional development and training." Data were coded manually and analyzed from the Survey Monkey link. The researcher utilized six thematic analysis steps from the survey questionnaires and open-ended questions to gather and code data. The participant responses suggested that teachers found blended learning to be an effective method in the classroom. The data also provided essential knowledge and value in terms of effective technology with meaningful training and ongoing professional development shared by the participants to support and improve blended learning. The findings will inform and benefit educators in developing instructional practices. There are various ways to implement successful blended learning to meet teachers' and students' diverse teaching and learning needs. The study outcomes will help school administrators, teachers, parents, and students prove that blended learning benefits education and provides meaningful knowledge that improves students' learning outcomes, performances, and achievements. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]