No, the Kangaroo competition is not mandatory. Participation in the competition is voluntary and open to students who are interested in challenging themselves in mathematics. It is a fun and educational opportunity for students to test their problem-solving skills and engage in friendly competition with their peers. **

Class events may be mandatory or not, depending on the specific event and the policies of the school or institution. Some class events, such as exams or presentations, are typically mandatory and attendance may be required. Other events, such as guest lectures or optional workshops, may be non-mandatory and attendance is at the discretion of the students. It is important for students to be aware of the expectations for each class event and to communicate with their instructors if they have any questions or concerns about attendance. **

Mandatory events in school are important because they provide students with opportunities to engage in activities that contribute to their overall development. These events help foster a sense of community and school spirit among students, as well as promote social interaction and teamwork. Additionally, mandatory events often expose students to new experiences and perspectives, helping them to broaden their horizons and develop important life skills such as communication, leadership, and problem-solving. Overall, mandatory events play a crucial role in enhancing the educational experience and creating a well-rounded learning environment for students. **

In the upper school, mandatory events typically include important school-wide assemblies, standardized testing days, and certain school-wide celebrations or ceremonies. These events are considered essential for all students to attend in order to ensure a sense of community and participation within the school. Additionally, certain academic events such as college fairs or career workshops may also be mandatory for upper school students to attend in order to support their academic and future planning. **

Black boots are not mandatory at a dressage competition, but they are traditionally the most common choice among competitors. Riders have the option to wear other colors of boots, such as brown or navy, as long as they are clean, well-fitted, and in good condition. Ultimately, the choice of boot color is a personal preference and does not affect the judging of the competition. **

Apartment viewings and mandatory events at work are common in many places. Apartment viewings are typically scheduled when a potential tenant wants to see the unit before signing a lease. Mandatory events at work, such as meetings or training sessions, are often scheduled to ensure that all employees are present and informed about important matters. Both apartment viewings and mandatory events at work are important for ensuring that individuals are well-informed and prepared for their living and work environments. **

To only evaluate the mandatory events in the attendance list, you can first identify which events are considered mandatory. This could be based on specific criteria such as importance to the organization or required for specific roles. Once you have identified the mandatory events, you can then filter the attendance list to only include those events and evaluate the attendance and participation of individuals for those specific events. This will allow you to focus on the essential aspects of attendance and ensure that the mandatory events are being properly attended to. **

No, it is not legally mandatory to hand in your mobile phone at events. The decision to collect and hold mobile phones at events is typically a policy set by the event organizers or venue management. However, attendees may be required to comply with such policies in order to enter the event or venue. It is important to review the event's terms and conditions or contact the organizers for specific information regarding their mobile phone policies. **