This book constitutes the proceedings of the 22nd Conference on Passive and Active Measurement, PAM 2021, which was planned to be held in Cottbus, Germany, in March 2021. Due to the Corona pandemic, the conference was organized as a virtual meeting. The 33 full papers presented in this volume were carefully reviewed and selected from 75 submissions. They were organized in topical sections named: COVID-19; web security; video streaming; TLS; staying connected; DoS; performance; network security; DNS; capacity; and exposing hidden behaviors. Due to the Corona pandemic, PAM 2021 was held as a virtual conference.

Imagine a classroom where all students are engaged in highly rigorous and fun learning every single day. That classroom can be yours starting tomorrow. You don't have to be a reading specialist to pick up this book. Anyone who wants to dramatically improve reading achievement will find helpful suggestions. You might be a third grade teacher whose students have mastered decoding, and you are ready to build their comprehension. Or you might be a high school science teacher whose students aren't yet reading on level with deep critical thinking. This book is for you. It doesn't matter whether you are a public, charter, private, or alternative education teacher: the Reading Without Limits program works in each one.

Along with hundreds of ready-to-use teaching strategies, "Reading Without Limits" comes with a supplemental website where teachers can download even more resources for free

"Reading Without Limits" is the first book offered in the KIPP Educator Series. KIPP, or the Knowledge is Power Program, began in 1994. As of Fall 2012, there are 125 KIPP schools in 20 states and the District of Columbia serving nearly 40,000 students climbing the mountain to and through college.