Add 250 student question.

Change formttedhtmlmessage -> formattedmessage

src/views/teachers/faq/faq.jsx

@@ -93,9 +93,22 @@ const TeacherFaq = props => (
                     <dt><FormattedMessage id="teacherfaq.studentMultipleTitle" /></dt>
                     <dd><FormattedHTMLMessage id="teacherfaq.studentMultipleBody" /></dd>
                     <dt><FormattedMessage id="teacherfaq.studentTransferTitle" /></dt>
-                    <dd><FormattedHTMLMessage id="teacherfaq.studentTransferBody" /></dd>
+                    <dd><FormattedMessage id="teacherfaq.studentTransferBody" /></dd>
                     <dt><FormattedMessage id="teacherfaq.studentEndTitle" /></dt>
                     <dd><FormattedMessage id="teacherfaq.studentEndBody" /></dd>
+                    <dt><FormattedMessage id="teacherfaq.student250Title" /></dt>
+                    <dd>
+                        <FormattedMessage
+                            id="teacherfaq.student250Body"
+                            values={{
+                                myClassesLink: (
+                                    <a href="https://scratch.mit.edu/educators/classes/">
+                                        <FormattedMessage id="teacherfaq.myClasses" />
+                                    </a>
+                                )
+                            }}
+                        />
+                    </dd>
                     <dt><FormattedMessage id="teacherfaq.studentDataTitle" /></dt>
                     <dd><FormattedMessage id="teacherfaq.studentDataBody" /></dd>
                     <dt><FormattedMessage id="teacherfaq.studentPrivacyLawsTitle" /></dt>

src/views/teachers/faq/l10n.json

@@ -44,6 +44,9 @@
     "teacherfaq.studentDataBody": "When a student first signs up on Scratch, we ask for basic demographic data including gender, age (birth month and year), country, and an email address for verification. This data is used (in aggregated form) in research studies intended to improve our understanding of how people learn with Scratch. When an educator uses a Scratch Teacher Account to create student accounts in bulk, students are not required to provide an email address for account setup.",
     "teacherfaq.studentPrivacyLawsTitle": "Is Scratch compliant with United States local and federal data privacy laws?",
     "teacherfaq.studentPrivacyLawsBody": "Scratch cares deeply about the privacy of students and of all individuals who use our platform. We have physical and electronic procedures in place to protect the information we collect. Although we are not in a position to offer contractual guarantees with each entity that uses our free educational product, we are in compliance with all United States federal laws that are applicable to a 501(c)(3) non-profit organization. We encourage you to read the {privacyPolicyLink} for more information.",
+    "teacherfaq.student250Title": "I want to add more than 250 studens to a class, how can I do this?",
+    "teacherfaq.student250Body": "It is not possible to add more than 250 students to a single class. You can, however, create a new class on the {myClassesLink} and add another 250 student accounts to each new class.",
+    "teacherfaq.myClasses": "My Classes page",
     "teacherfaq.commTitle": "Community",
     "teacherfaq.commHiddenTitle": "Can I create a private class?",
     "teacherfaq.commHiddenBody": "No. All content shared within your class will be accessible to the Scratch community.",